1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright © 2014 Broadcom
4*4882a593Smuzhiyun */
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun #include <linux/seq_file.h>
7*4882a593Smuzhiyun #include <linux/circ_buf.h>
8*4882a593Smuzhiyun #include <linux/ctype.h>
9*4882a593Smuzhiyun #include <linux/debugfs.h>
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #include "vc4_drv.h"
12*4882a593Smuzhiyun #include "vc4_regs.h"
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun struct vc4_debugfs_info_entry {
15*4882a593Smuzhiyun struct list_head link;
16*4882a593Smuzhiyun struct drm_info_list info;
17*4882a593Smuzhiyun };
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun /**
20*4882a593Smuzhiyun * Called at drm_dev_register() time on each of the minors registered
21*4882a593Smuzhiyun * by the DRM device, to attach the debugfs files.
22*4882a593Smuzhiyun */
23*4882a593Smuzhiyun void
vc4_debugfs_init(struct drm_minor * minor)24*4882a593Smuzhiyun vc4_debugfs_init(struct drm_minor *minor)
25*4882a593Smuzhiyun {
26*4882a593Smuzhiyun struct vc4_dev *vc4 = to_vc4_dev(minor->dev);
27*4882a593Smuzhiyun struct vc4_debugfs_info_entry *entry;
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun debugfs_create_bool("hvs_load_tracker", S_IRUGO | S_IWUSR,
30*4882a593Smuzhiyun minor->debugfs_root, &vc4->load_tracker_enabled);
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun list_for_each_entry(entry, &vc4->debugfs_list, link) {
33*4882a593Smuzhiyun drm_debugfs_create_files(&entry->info, 1,
34*4882a593Smuzhiyun minor->debugfs_root, minor);
35*4882a593Smuzhiyun }
36*4882a593Smuzhiyun }
37*4882a593Smuzhiyun
vc4_debugfs_regset32(struct seq_file * m,void * unused)38*4882a593Smuzhiyun static int vc4_debugfs_regset32(struct seq_file *m, void *unused)
39*4882a593Smuzhiyun {
40*4882a593Smuzhiyun struct drm_info_node *node = (struct drm_info_node *)m->private;
41*4882a593Smuzhiyun struct debugfs_regset32 *regset = node->info_ent->data;
42*4882a593Smuzhiyun struct drm_printer p = drm_seq_file_printer(m);
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun drm_print_regset32(&p, regset);
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun return 0;
47*4882a593Smuzhiyun }
48*4882a593Smuzhiyun
49*4882a593Smuzhiyun /**
50*4882a593Smuzhiyun * Registers a debugfs file with a callback function for a vc4 component.
51*4882a593Smuzhiyun *
52*4882a593Smuzhiyun * This is like drm_debugfs_create_files(), but that can only be
53*4882a593Smuzhiyun * called a given DRM minor, while the various VC4 components want to
54*4882a593Smuzhiyun * register their debugfs files during the component bind process. We
55*4882a593Smuzhiyun * track the request and delay it to be called on each minor during
56*4882a593Smuzhiyun * vc4_debugfs_init().
57*4882a593Smuzhiyun */
vc4_debugfs_add_file(struct drm_device * dev,const char * name,int (* show)(struct seq_file *,void *),void * data)58*4882a593Smuzhiyun void vc4_debugfs_add_file(struct drm_device *dev,
59*4882a593Smuzhiyun const char *name,
60*4882a593Smuzhiyun int (*show)(struct seq_file*, void*),
61*4882a593Smuzhiyun void *data)
62*4882a593Smuzhiyun {
63*4882a593Smuzhiyun struct vc4_dev *vc4 = to_vc4_dev(dev);
64*4882a593Smuzhiyun
65*4882a593Smuzhiyun struct vc4_debugfs_info_entry *entry =
66*4882a593Smuzhiyun devm_kzalloc(dev->dev, sizeof(*entry), GFP_KERNEL);
67*4882a593Smuzhiyun
68*4882a593Smuzhiyun if (!entry)
69*4882a593Smuzhiyun return;
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun entry->info.name = name;
72*4882a593Smuzhiyun entry->info.show = show;
73*4882a593Smuzhiyun entry->info.data = data;
74*4882a593Smuzhiyun
75*4882a593Smuzhiyun list_add(&entry->link, &vc4->debugfs_list);
76*4882a593Smuzhiyun }
77*4882a593Smuzhiyun
vc4_debugfs_add_regset32(struct drm_device * drm,const char * name,struct debugfs_regset32 * regset)78*4882a593Smuzhiyun void vc4_debugfs_add_regset32(struct drm_device *drm,
79*4882a593Smuzhiyun const char *name,
80*4882a593Smuzhiyun struct debugfs_regset32 *regset)
81*4882a593Smuzhiyun {
82*4882a593Smuzhiyun vc4_debugfs_add_file(drm, name, vc4_debugfs_regset32, regset);
83*4882a593Smuzhiyun }
84